Composition for insulating and waterproofing various articles.



No. 739,514; PATENTED SEPT. 22, 1903. E. A. G. STREET. COMPOSITION FOR INSULATING AND WATERPROOFING VARIOUS ARTICLES.

.APPLIOATIOR FILED AUG. 4. 1902.

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(Ya- MM IPatented September 22, 1903.

UNITED STATES PATENT OFFICE.

ERNEST AUGUSTE GEORGE STREET, OF PARIS, FRANCE, ASSIGNOR TO SOOIETE ANONYME LE OARBONE, OF LEVALLOIS-PERRET, NEAR PARIS, FRANCE.

COMPOSITION FOR INSULATING AND WATERPROOFING VARIOUS ARTICLES.

SPECIFICATION forming part of Letters Patent No. 739,514., dated September 22, 1903.

' Application filed August A, 1902. Serial No. 118,396. (No model.)

To all whom it may concern.-

Be it known that I, ERNEST AUGUSTE GEORGE STREET, a citizen of the Republic of France, residing at 56 Rue de Londres, Paris, in the Republic of France, have invented a certain new and useful Improved Composition for Insulating and Waterproofing Various Articles, of which the following is a specificatiou.

This invention has reference to electric cells, and particularly to those used by motorists and cyclists for supplying the sparking current for the cylinders.

The invention has for its chief object to preserve or strengthen the outer jar or acid-container of electric cells, said jar or container being not infrequently of a brittle nature and liable to be cracked or damaged at times and in situations where injury to the battery is particularly inconvenient and cannot immediately be rectified.

Figure 1 is a vertical section of a glass electric jar with a somewhat exaggerated coating. Fig. 2 is a horizontal section taken approximately on the line 2 2 of Fig. Fig. 3 shows a vessel containing a quantity of solution and one bottle being dipped by hand while another bottle is standinginverted on a shelf to drain. I

a is the glass; 17, the coating; 0, the container for the solution; 0, the shelf of openwork or laths, and d the solution.

According to my said invention I apply to the inner or outer surface, or both, of the said jar or container a film or thin coating of celluloid obtained by dissolving said celluloid in an acetone or other appropriate solvent and suitably applying it to the surface in a liquid condition. The said solution is then allowed or caused to dry.

In carrying the invention into practice where the said coating is to be applied to the outer surface of the jar said jar is dipped into the aforesaid solution, the saturation of the solution being dependent upon the thickness of the coating required and upon the nature or porosity of the jar. After immersion the jar is taken out of the solution and dried. It is then covered with a second coating of celluloid by renewed immersion in the solu' tion and again dried,as aforesaid. This treatment may be continued until a coating of the desired thickness has been obtained. Where the aforesaid coating is to be applied to'the inner surface,the jar is partly or entirely filled with the solution instead of being dipped therein, the excess of solution being then poured away and the remaining solvent evaporated.

The above treatment will be found especially useful in the case of jars or containers constructed of glass, earthenware, stone, or carbon, where said jars or containers possess a certain degree of brittleness or porosity or cracks, bubbles, or similar flaws due to imperfections in their process of manufacture, the pores or the cracks or other flaws being by my process of treatment completely filled up and rendered impervious to air or water. Moreover, brittle or perishable jars or containers are materially strengthened or toughened by the protective coating, and even if they should become cracked during use leakage will be avoided,the crack being prevented from extending to the coating by the elasticity of the latter. If during the application of the aforesaid coating the contraction that is occasioned by the evaporation of the solvent should leave cracks or other flaws in the coating, said cracks or flaws may be remedied either by applying to them a coating of the solution by means of a paint-brush or other suitable device or by passing over the dry coating a smoothing-iron heated approxi mately to the temperature of boiling water.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is-- 1. An electric cell having the outer jar or liquid-container coated with a solution of celluloid, substantially'as described.

2. In an electric cell the combination of a glass jar or container and an adherent coating thereon of celluloid, substantially as described.

In testimony whereof I have hereunto set my hand, in presence of two subscribing witnesses, this 23d day of July, 1902.

ERNEST AUGUSTE GEORGE STREET.

Witnesses:

ENRIQUE SALZ, EDWARD P. MACLEAN. 

